Fuel pump and direct fuel injection engine

Details Fuel pump and direct fuel injection engine Fuel pump and direct fuel injection engine

2005-03-01

2005-03-01

Moulis, Thomas (Department: 3747)

Internal-combustion engines

Charge forming device

With fuel pump

Reexamination Certificate

active

06860255

ABSTRACT:
A fuel pump, of which sliding mechanism parts in its fuel chamber have good wear resistance under a severe environment, and a direct fuel injection engine using the fuel pump are provided.In a fuel pump for pressurizing and delivering fuel to a fuel injector of a vehicle engine, at least one of sliding surfaces of a slant plate, a slipper and a plunger sliding in a lubricating oil and at least one of sliding surfaces of sliding members of a plunger and a cylinder contacting with and sliding on each other through the fuel are formed of a hardened layer composed of any one of a nitrided layer, a carburization quenched layer and a carbonitrided layer, or coated with a high corrosion resistant and hard metal compound layer over the hardened layer.

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Encyclopedia of materials science and engineering vol. 4, Pergamon Press, 1986; pp. 520-522, 3210-3213.

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